Convert //ash from scoped_ptr to std::unique_ptr

ash/rotator/window_rotation.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_WINDOW_ROTATION_H_
 #define ASH_WINDOW_ROTATION_H_
 
+#include <memory>
+
 #include "ash/ash_export.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "ui/compositor/layer_animation_element.h"
 #include "ui/gfx/geometry/point.h"
 
 namespace ui {
 class InterpolatedTransform;
 class Layer;
 }
 
 namespace aura {
 class RootWindow;
@@ skipping 16 matching lines @@
   // Generates the intermediate transformation matrices used during the
   // animation.
   void InitTransform(ui::Layer* layer);
 
   // Implementation of ui::LayerAnimationDelegate
   void OnStart(ui::LayerAnimationDelegate* delegate) override;
   bool OnProgress(double t, ui::LayerAnimationDelegate* delegate) override;
   void OnGetTarget(TargetValue* target) const override;
   void OnAbort(ui::LayerAnimationDelegate* delegate) override;
 
-  scoped_ptr<ui::InterpolatedTransform> interpolated_transform_;
+  std::unique_ptr<ui::InterpolatedTransform> interpolated_transform_;
 
   // The number of degrees to rotate.
   int degrees_;
 
   // The target origin.
   gfx::Point new_origin_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowRotation);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WINDOW_ROTATION_H_